Rooftop Cargo Carrier, 21 Cubic Feet Soft-Shell Waterproof Car Roof Luggage Bag for All Vehicles SUV with/Without Rails, Includes 10 Reinforced Straps + 6 Door Hooks,Storage Bag,Anti-Slip Mat

Ok first of all. This is secure, sturdy and added so much space. I accidentally loaded it upside down and it still stayed secure on a 5hr drive. Honestly super happy with it and can’t wait to load it *correctly* next time.

I ordered this semisoft / tarp material carrier for my 2011 SiennaSize -- knowing the cross car (rail to rail) was smaller than the width of this unit. I squeezed its deformable base (and all bags within the rails) and then expanded by putting 4" pvc pipes along the Drv/Pass sides to give side wall rigidity/prevent flapping (the height of my bags didn't take up all of the volume). I also put smaller bags at front in order to crush down more and have a wedge/ramp shape to reduce drag/flapping.Ease of Use-- takes a good 20 mins to pull zippers/straps tight and tie loose ends.I'm 6ft tall and could manage pulling / manipulating the flap lid to open/close over my luggage/bags from my sliding doors and rear bumper. If you're not as tall/less reach, you may need to consider the plastic foot step you can buy separately that attaches to the inner door loop.To pull the zipper closed, you really need to fight to keep the lid/flap from bending, so as to keep it parallel to the bottom half (more rigid). Once the zippers are pulled to the rear of vehicle, the pull down straps eat up the slack in the fore/after and cross car directions adequately (make sure to pull buckles to tightest positions)PROS -- having 6 buckles on 3 straps equally spread out and engaged with OEM roof rack felt sturdy and strong. Assuming a 5g load, 100 lbs max carrier means a 500 lbs force3 straps => 167 lbs each (fabric was thick/wide enough like camping backpacks)6 buckles=> 83 lbs each (plastic felt strong like on camping backpacks)At each strap the tarp fabric is reinforced and will likely be your eventual point of fatigue, failure (cracking/tearing) given the material type. Especially if you allow the material to violently flap with wind resistance. Product longevity will likely depend on excessive tension (or loose flapping) causing material wear/tearing and creasing of tarp material while packed in longterm storage.Bang for buck -- I had to transport my family's vases/paintings to NYC on an 8hr road trip. Unfortunately with kids, there was no interior room left to pack weekend clothes for everyone. Having this temporary carrier allowed me to keep my valuables in the car and bags of clothing outside. After delivery/weekend, our return trip had the carrier easily folded/stowed inside along with our bags of clothing. Saved me from needing two cars or renting a UHaul trailer. For the price, it was a welcomed increase in (weatherproof) vehicle storage (no additional $400tow hitch/$200basket, no roof cross bars for a $600 roof coffin, etc).CONS -- antislip mat was a little small for it's purpose. If you do not center it properly (and pull straps tight) the wind resistance will slide the whole carrier rearward. **As stated by others, adding your own frictional pad to add compression/prevent paint damage would help (similar spongy perforated rubber) increase vehicle to carrier grip.Conclusion -- price is very attractive for less frequently used carrier that may be easily folded/stowed after use (especially for underground parking/garages).

It was pretty easy to install and it worked great!!! Drove from Florida to Pennsylvania and we did not have any issues. Went through 2 rains storms and everything inside stayed dry

It's everything it states it is, works perfectly.

We used this on a cross country road trip. Drove over 4k miles and it didn't move, not one issue at all. I would definitely but again. We had suit cases for 6 people, 4 camping chairs, pillows and blankets , and a tent in it. It is much bigger than it looks.